MESON Chess Problem Database

Problem Display
PID: 189900 (2r1R2B/3P3K/N1bpP1Qn/p2k4/1r2N3/1P1p4/2Pq4/8 w - - 0 1)

Nagy, Odon

Pesti Naplo, 1912

2r1R2B/3P3K/N1bpP1Qn/p2k4/1r2N3/1P1p4/2Pq4/8

#2

10 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sc3#
    • 1...Qc3
      • 2.Sxc3#
    • 1...Qe3
      • 2.Sc3#
    • 1...Qf4
      • 2.Sc3#
    • 1...Qg5
      • 2.Sc3#
    • 1...Qd1
      • 2.Sc3#
    • 1...Qe2
      • 2.Sc3#
    • 1...Qf2
      • 2.Sc3#
    • 1...Qg2
      • 2.Sc3#
    • 1...Qh2
      • 2.Sc3#
    • 1...Rb5
      • 2.c4#
    • 1...Rb6
      • 2.c4#
    • 1...Rb7
      • 2.c4#
    • 1...Rbb8
      • 2.c4#
    • 1...Rc7
      • 2.Sxc7#
    • 1...Ra8
      • 2.Sc7#
    • 1...Rcb8
      • 2.Sc7#
    • 1...Rd8
      • 2.Sc7#
    • 1...Rxe8
      • 2.Sc7#
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sg8
      • 2.Qf5#
  • Tries
    • 1.Qh5+?
      • 1...Qg5
        • 2.Sc3#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Kxe4!
    • 1.Qg5+?
      • 1...Qxg5
        • 2.Sc3#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Kxe4!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Sc3#
      • 1...Rxb3
        • 2.Sxd2#
      • 1...Rxe4
        • 2.c4#
      • 1...Rxe8
        • 2.Sc7#
      • 1...Qc3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 19
  • Sets
    • Q(a);N_GUARD::S(C)
    • Q(a);N_GUARD::S(C),XQ(a)
    • R(c);N_GUARD::P(A)
    • R(c);N_GUARD,P_PINP(G)::P(A)
    • R(i);N_GUARD,P_PINP(G)::S(D),XR(i)
    • R(i);N_GUARD::S(D)
    • R(i);N_GUARD,XR(I)::S(D)
    • S(h);N_GUARD::QAR2(F),XS(h)
    • S(h);N_GUARD::QAR2(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • Q(a);P_SPINQ(a)::S(C)
        • S(h);N_GUARD,P_SPINS(h)::QAR2(F),XS(h)
      • Refutation
        • K(e);S_FLIGHT,XS(C)
    • Try
      • Q(F);CHECK
      • Vars
        • Q(a);XQ(F)::S(C)
        • S(h);N_GUARD,P_SPINS(h)::QAR2(F),XS(h)
      • Refutation
        • K(e);S_FLIGHT,XS(C)
  • Actual
    • Q(F);
    • Threat
      • QAB(F)+S(C),DCHECK
    • Vars
      • R(c);N_GUARD,XP(B)::QAB(F)+S(C),XQ(a)
      • R(c);N_GUARD,P_SPINR(c),XS(C)::P(A)
      • R(i);N_GUARD,XR(I)::S(D)
      • Q(a);::QAB(F)+S(C),DCHECK,XQ(a)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).